TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download

Page 294 of 890

TM 9-2320-280-20-1 REFERENCE INFORMATION CAUTION Ensure all electrical loads are disconnected or turned off. Higher voltage could damage components in other devices. 1. Disconnect battery ground cable. 2. Loosen screws. 3. Remove clamp pins from slots. 4. Loosen connector nut. 5. Remove regulator from alternator. Secure regulator out of the way. 6. Connect battery ground cable. NOTE Jumper wires must be able to handle 15 amp current (14 gauge or larger diameter). NOTE Multimeter set to read over 75 vdc. ENGINE RPM STE/ICE-R TEST 10 1. Start Test 10, Engine RPM. 2. Crank or start the engine. Displayed reading is RPM. Cranking RPM should be approximately 100. Set idle speed to 850 RPM. 0-45 DC VOLTS STE/lCE-R TEST 89 1. Connect RED clip to indicated test point, BLACK clip to negative or ground. 2. Start Test 89, DC volts. 3. Displayed reading is in volts. 2-211